I have just combined an Echo Audio Indigo IO with Adobe Audition 1.5 in hopes to have a reasonably good laptop recorder. That need is met quite well.
There are a number of discussions about bit depth in these forums. The answers become obfuscated by internal conversions done in audio cards, software, and Windows drivers. My current interest is simply how to get 24 bits of unadultered data from a D/A convertor to a data file using Audition. This data will be used to analyze pitch, frequency and intonation and any changes to the data will affect the results.
Both the Indigo IO and Audition claim 24-bit support and I am convinced that both meet these claims fully. In spite of this there is no evidence that the card, Windows, and the software together will actually meet this claim without a 16-bit conversion along the line. What really matters is whether or not 24-bits of audio can travel from the card to the data file without any changes.
Question 1: In Audition 1.5 for Windows under "Options/Device Properties/Wave In/Supported Formats" for the Indigo IO the highest density recording listed is 16-bit stereo at a 96K sample rate. What properties do other users find for their 24-bit cards?
Question 2: The wave programming calls (waveInGetDevCaps) don't include capability definitions for anything beyond 16-bit depth at a 96K sample rate. Where in Windows is there evidence of true support for anything greater than 16-bit Audio?
Question 3: What software is there that will go directly to the sound card or driver and write 24 unadultered bits to a file?
There are a number of discussions about bit depth in these forums. The answers become obfuscated by internal conversions done in audio cards, software, and Windows drivers. My current interest is simply how to get 24 bits of unadultered data from a D/A convertor to a data file using Audition. This data will be used to analyze pitch, frequency and intonation and any changes to the data will affect the results.
Both the Indigo IO and Audition claim 24-bit support and I am convinced that both meet these claims fully. In spite of this there is no evidence that the card, Windows, and the software together will actually meet this claim without a 16-bit conversion along the line. What really matters is whether or not 24-bits of audio can travel from the card to the data file without any changes.
Question 1: In Audition 1.5 for Windows under "Options/Device Properties/Wave In/Supported Formats" for the Indigo IO the highest density recording listed is 16-bit stereo at a 96K sample rate. What properties do other users find for their 24-bit cards?
Question 2: The wave programming calls (waveInGetDevCaps) don't include capability definitions for anything beyond 16-bit depth at a 96K sample rate. Where in Windows is there evidence of true support for anything greater than 16-bit Audio?
Question 3: What software is there that will go directly to the sound card or driver and write 24 unadultered bits to a file?